only when they refused to give up al qaeda. so it's going to be up to the afghan people and the afghan forces in order to deal with any insurgent taliban coming in. we can help them with intelligence. we can help them with weapons training, whatever they need but the burden of defending their country and keeping it from falling again to the taliban will rest squarely on the shoulders -- >> what about zero option? you leave any troops there? >> i have heard this rumor about zero option. i don't know there's any merit to it. you have to stay there. we have to have advisers. we have to watch where the money's going. we have to be able to conduct counterterrorism activities, so i would support a zero option but there's always a tendency in washington on these issues to say 2,000, 4,000, 10,000 that's not the right way to go about it. a military plan you determine what it is that we have to do. how many advisers do we need? what kind of military assistance group do we need? and then you determine what those numbers are. i don't know